Examples of Ann Coulter's alleged plagiarism can be found on the Rudepundit blog, gathered together in the July 6 post entitled
All Coulter Plagiarism Allegations in One Post. It's the top post as of this evening (Thurs Pacific Time); after tonight you may have to scroll down a bit to find it.
Those offended by sexual content and obscene language should probably steer clear. He's called the Rude Pundit for a reason. Otherwise, have a look for yourself.